Truck



F. E. BACHMAN 2,116,964

TRUCK Filed Aug. 6, 1934 2 Sheets-Sheet l 5 gkggwlugg [mania/ FredEBachmarz, $5M,

F. E. BACHMAN TRUCK Filed Aug. 6, 1934 SheetsSheet 2 i la.

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Patented May 10, 1938 UNITED ,STATES PATENT OFFICE M I T 2,116,964 r I I moon, v Fl-ed, E. Bacliman, Chicago, Ill., assignor to American Steel Foundries, Chicago,lll., a corporation oi'NewJersey i I Application August 6, 1934, Serial Nor738Ji74 26 Claims. (01. 105-4911) This invention pertains to car trucks.

It is an object of this invention to provide improved and economical trucks wherein loads are supported by springs of different character.

l Another object is to provide a truck construction wherein coil and elliptic springs are used to simultaneously support loads and wherein spring capacity is greatly increased over similar types of trucks.

l A further object isto provide atru'ck construction wherein a movable bolster is used supported by coil and elliptic springs on adjacent frame structure.

With theseand various otherobjectsin view,

18 the invention may consist of certain novel features of construction and operation, as will be more fully described and particularly pointed outin the specification, drawings and claims apf pended hereto. 1

go In the drawings, which illustrate an embodiment of the device and wherein like reference characters are used to designate likeparts- Figure 1 is a side elevationof one form of truck construction embodying the invention; Figure 2 is an end elevation, partly in section,

of the truck construction illustrated in Figure 1,

the section being taken substantially inthe plane of the transverse center line of the truck;

Figure 31s a side elevation of another modified 30 form of truck construction embodying the inf vention; I I

Figure 4 is an end elevation, partly insection,

of the truck construction illustrated in Figure 3,

the section thereof being takensubstantially in I the plane of the transverse center line of the" truck and having certain parts omitted; and

Figure 5 is a transverse fragmentarysectional elevation of a slightly modified form of truck embodying the invention, the same being taken'substantially in the plane of the transversecenter line of the truck.

The subject matter of Figures 1 to 4 inclusive,

of this application have been divided" out of application Serial No. 543,763, filed June 12, 1931,

46 where they appeared as Figures 7 to 10 inclusive, this application nowhaving matured into United States Patent No. 2,051,630, granted August 18, 1936.

Referring first of all more particularly to the truckconstruction illustrated in Figures 1 and 2,

the side frame I20 is provided withthe tension and compression members I22 and I24 merging adjacent their ends, being provided with the journal boxes l26. The journal boxes accommodate the ends of the axle I28 of the wheel and axle versely extending spring Plank I34 extending within said window, the spring plank being preferably upwardly flanged as at I36. a

The bolster I38, extends within the windows and is provided with guide portions I40 coopcrating with the column guides I32, the bolster being provided with the center bearing IN and side bearings J43. Ifhe tension member 122 is provided withraised coil spring seats I42 and the bolster is provided with coil spring seats I44 between whichthe coil springs I46 are disposed. The bolster is provided with a leaf spring seat I48 disposed inwardly, oi the side frames and ac-, commodating the leaf or semi-elliptic springs I50, said spring seat I48 being substantially in vertical alignment with the side bearings I43.

The semi-elliptic springs are spaced between the, coilsprings I4G and the outer ends thereof are provided with suitable shoes, I52 supported on thespring plank I36 directly within the window of the side frame. The oppositeend of the deaf springs is provided with a suitable shoe I54 pivoted as at I 56 to the link I 58, the opposite end of the link being pivoted as at I60 to the bolster.

In the construction shown in Figures 3, 4 and 5, the side frame I60 is provided with the tension and compression members I62and I64 merging adjacent their ends and provided with the journal boxes "56., The tension and compression members are connected by means of the columnguides I68 forming a window, the bottom chord thereof being substantially on one level. The journal boxes accommodate the ends, of the axle I10 of the wheel andaxle assembly I12, and theside frames are connected by the spring plank 114,

preferably flanged as at I76. The bolster I18 extends within the side frame; being provided withguides I cooperating with the column, guides I68, the bolster being provided with the oenterbearing NH and side bearings I83.

Within the opening formed in the side frame there is provided an anti-friction bearing seat I82 fixed with respect to theside frame. "A movable seat I84 is provided, spacedby means of The member I84 the anti-friction rollers I86.

of the bolster. The bolster is provided with spaced leaf spring seats I94 provided therein and spaced between the side frames for accommodating the leaf or semi-elliptic springs I96, said leaf spring seats I94 being substantially in vertical alignment with the side bearings I83. The outer ends of the springs are provided with a shoe I98 disposed in seat 200 provided in the member I84, the opposite ends of the leaf springs being. pro vided with a suitable shoe 202 disposed in a seat 2 provided in the bolster.

In the construction illustrated in Figure 4 the end of the bolster outwardly of the seat 204 is substantially inverted U-shaped, being provided with the depending coil spring seats I92 provided on the bolster. In the construction illustrated in Figure 5, however, the bolster is substantially boxshaped throughout its entire length, being apertured as at 206 to permit passage of the semieliiptic leaf spring 2IIJ therethrough, coil spring seats 208 being provided adjacent the ends in a similar position to the coil spring seat I92. The leaf spring seats'adjacent the outer end as at, II! on the seat 200 of theroller's I86, and the spring band 2 of the leaf spring supportingly engages the seat 2l6p'rovided in the bolster. The inner end of the leaf spring engages the inner bolster seat 2 l8, the end of the bolster being substantially uninterrupted as at .220.

with construction such as shown herein, an economical truck is provided, and one 'making for ease in riding qualities, The elliptic springs, working togetherwith the coil springs, prevent oscillation or bouncing of the truck and car by virtue of the friction between the leaves of .the elliptic springs. Thus increased spring capacity is obtained without requiring additional sets of springs, as would be the case if elliptic springs combination set forth, permits the car to roll; or oscillate transversely without a great tendency Y to force the wheel over the rail, as would be thecase were the bolster rigidly fixed to the truck.

It is to be understood'that I do not wish to be limited by the exact embodiments of the device shown, which are merely by way of illustration and not limitation, as various and other forms ofthe device will of course be apparent to those skilled in the art without departing from the spirit of the invention or the scope of the claims.

I claim:

1. In a truck, the combination of a side frame having tension and compression members and column guides therebetween forming an opening therein, a bolster extending into said opening and cooperating with said column guides, coil springs disposed between said bolster and said tension member), and a leaf spring disposed between said coil-springs, said leaf spring being seated at two points on said bolster and supported at one point on said side frame, said points being spaced apart longitudinally of said spring.

2. In a truck, the combination of a side frame having tension and compression members and column guides therebetween forming an opening therein, a bolster extending into said opening and cooperating'with said column guides, coil springs disposed between said bolster and said tension member, a leaf spring disposed between saidcoilsprings, said leaf spring being seated at two points on said bolster and supported at one point on said side frame, said points being spaced apart longitudinally of said spring and anti-friction members between said springs and side frame. 1

3. In a truck, the combination of a side frame having tension and compression members and column guides therebetween forming an opening therein, a bolster extending into said open ing and cooperating with said column guides, coil springs disposed between said bolster and said tension member, and leaf springs disposed between said coil springs, said leaf springs being seated intermediate their length onsaid bolster, one end of said leaf springs seating on said side frame, the other end of said leaf springs being linked to said bolster.

4. In a truck, the combination of a side frame having tension and compression members and column guides therebetween forming an opening therein, a bolster extending into said opening and cooperating with said column guides, coil springs disposed between said bolster and-said tension member, and leaf springs disposed between said coil springs, said leaf springs being seated intermediate their length on said bolster, one end of said leaf springs seating on said side frame, the other end of said leaf springs being seated on said bolster. I 5. In a truck, the combination of a side frame having tension and compression-members and column guides therebetween forming an opening therein, anti-friction means seated on said truck member, a bolster extending into said opening and cooperating ,with said column guides, coil springs disposed between-said bolster and said anti-friction means and seated on said means, and leaf springs disposed between said coil springs, said leaf springs being seated intermediate theirlength on said bolster,- one end of said leaf springs being seated on said bolster, the other end of. said leaf springs being seated on said anti-friction means. i

6. In a truck, the combination of a side frame, a load carrying member, resilient means of different character, mounted on said side frame and each engaging said load carrying member,

one of said resilient means seating on seats on said load carryingemember. at a plurality of points, said points being spaced longitudinally of said load carrying member, and lateral motion means interposed between said side frame and said resilient means. I

7. In a truck, the combination of spaced side frames, a load carrying member, and an independent spring assembly at each side of said truck arranged to directly support said load carrying member on each of. said side frames,

said spring assemblies each including a. semi elliptic spring, a coil spring and lateral motion fmeans, said semi-elliptic spring being disposed and directly engaging seats carried by said-load carrying member at a plurality of points and spaced longitudinally of said load carrying member.

9. In a truck, the combination of a side frame,

port said'load carrying'member on said side frame, said resilient means including a'semlvelliptic spring disposed transversely of the truck and supported on said side name at'a single point and directlyengaging seats carried by said load carrying member at a plurality of points and spaced longitudinally of said load carrying member. r

10. In a railway car truck, opposite side frames, springs carried in said side frames, a bolster extending between said side frames with its ends supported on said springs, and additional bolster supporting means comprising a cantilever spring having its inner end engaging a formation on said bolster and its outer end supported on a side frame.

11. In a railway car truck, opposite side frames, helical springs carried in said side frames, at bolster extending between said side frames with its ends supported on said helical springs, and additional bolster supporting means comprising a leaf spring having its inner end engaging a formation on said bolster and its outer end supported on a side frame.

12. In a railway car truck, opposite side frames having windows; therein, a spring plank joining said side frames at said windows, coil springs carried in the windows'of said side frames, a, bolster supported at all times on said springs, and additional bolster supporting springs disposed outside said windows between said bolster and spring plank, said latter springs engaging thebolster on seats spaced longitudinally of said latter springs, said latter springs acting in parallel with the first mentioned springs.

,13. In a railway car truck, opposite side frames having windows therein, springs seated within said windows, a bolster extending between said side frames with its ends supported on said springs, and additional bolster supporting means comprising cantilever springs having their inner ends engaging formations on said bolster and their outer ends supported on said side frames at the seats for said first mentioned springs.

14. In a railway car truck, opposite side frames having windows therein, a spring plank joining said side frames at said windows, seat members superposed upon the ends of said spring plank at said windows, springs mounted on said seat members, a bolster extending between said side frames with its ends supported on said springs, and additional bolster supporting means comprising springs of a different kind positioned between said spring plank and bolster and disposed transversely with respect to said side frames and with certain of their ends engaging the seat members aforesaid, the opposite ends of said last-named springs engaging said bolster.

15. A bolster having a center bearing and spaced side bearings, said bolster having a substantial box section between said side bearings and being of substantially inverted U-section outwardly thereof, leaf spring seats, certain of said seats being formed in said bolster substantially in the plane of said side bearings and other of said seats being formed substantially inwardly thereof, and spring seats formed on the ends of said bolster.

16. A bolster having a center bearing and,

spaced side bearings, said bolster having a substantial box section between said side bearings and being of substantially inverted U-section outwardlyjtheroflfleaf"spring seats, certain ofls aid seats being forined in said holstersubstantially in the plane of said side bearings and otherof said of, and coil spring seats formed, on the fiends of said'bolster. f I Q l 17, A bolster having center and.. side,bearings,

said bolster being a substantialboxsection be- 'seats being formed substantially inwardly; there;

tweenits 'en'ds, said box 'se'jction being formed. by

an upper compression member and a lower tension member and spaced side members integrally connecting said tension and compression members, leaf spring seats provided on said tension member and side members, and coil spring seats formed adjacent the ends of said bolster and on said tension member.

18. A bolster having a center bearing and spaced side bearings'said bolster being a'substantial box sectionbetween the ends thereof, said bolster being provided with an aperture substantially in vertical alignment with said side bearings, spring seats formed in said box section adjacent said aperture and substantially in vertical alignment with said side bearings, and coil spring seats formed on the ends of said bolster.

19. In a truck, the combination of side frames having spaced journal boxes, a load carrying member, and resilient means .of different character arranged on each side'of said truck for supporting said load carrying member on said side frames,- said resilient means each including a semi-elliptic spring disposed longitudinally of said load carrying member and only supported by said side frame at a single point and other means of different character than said spring disposed in parallel therewith, said means being supported on spaced seats on said side frame, said seats being spaced from said journal boxes.

20. A bolster having a center bearing and spacedside bearings, said bolster having a substantial box section between said side bearings, and being of substantially inverted U-section out-' wardly thereof, spring seats formed in said box section substantially in vertical alignment with said side bearings, and spring seats formed on the ends of said bolster outside said U-section and spaced from said side bearings.

21.11 bolster having a center bearing" and spaced side bearings, said bolster having a sub stantial box section between said side bearings and being of substantially inverted U-section outwardly thereof, spring seats formed in said box section substantially invertical alignment with said side bearings, and coil spring seats formed on the ends of said bolster outside said .U-section.

22. A bolster having a center bearing and spaced side bearings, said bolster having a substantial box section between said side bearings and being of substantially inverted U-section outwardly thereof, leaf spring seats formed in said box section substantially in vertical alignment on the outside of said bolster and adjacent the ends thereof.

26. A bolster having a center bearing, spaced side bearings and column cooperating portions, said columncooperating portions having spring seats. said bolster having a plurality of 1ongitudinally spaced seats between the center bearing and each of the ends of the bolster for accommodating a leaf spring on each side of said center bearing.

FRED E. BACHMAN. 

